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A cylinderical tube of length L has inne...

A cylinderical tube of length L has inner radius a and outer radius b. What is the resistance of the tube between its inner and outer surface ? Given that the resistivity of its material is `rho`.

A

`rho(2pi L)ln((b)/(a))`

B

`(rho)/(4pi L)ln((b)/(a))`

C

`(rho)/(2piL)ln((2b)/(a))`

D

`(rho)/(piL)ln((b)/(a))`

Text Solution

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The correct Answer is:
B
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